Centric 320.66027F Disc Brake Rotor - Front

Centric GCX Front Brake Rotor Overview

The Centric GCX Elemental Protection Disc Brake Rotor, part number 320.66027F, is built for front axle applications that need OE-style braking performance with added resistance to rust and corrosion. It is a fully coated, vented rotor with a smooth surface and application-specific metallurgy for consistent fit and finish.

Compatible With Chevrolet Express 2500, GMC Savana 2500, Chevrolet Express 3500, GMC Savana 3500, Chevrolet C2500, Chevrolet C3500, GMC C2500, GMC C3500, Chevrolet C1500 Suburban, Chevrolet C2500 Suburban, GMC C1500 Suburban, and GMC C2500 Suburban front brake applications.

Key Features

• Part number 320.66027F
• Fully coated disc finish with coated hat for corrosion resistance on non-mating surfaces
• Vented rotor design with straight vanes
• Smooth surface type for consistent pad contact
• OE-matched metallurgy using Centric G11H18 Enhanced Carbon or G12H17 High Carbon alloy formulations
• ABS tone ring included
• 8-lug hub-and-rotor mounting pattern
• Outside diameter: 317.2 mm / 12.488 in.
• Nominal thickness: 32.700 mm / 1.287 in.
• Discard thickness: 30.860 mm / 1.215 in.

Product Details

Centric’s GCX Full Coating line is engineered to match OE braking characteristics while adding protection to exposed rotor surfaces. The RS200 coating is applied to non-mating areas to help preserve appearance and reduce rust formation over time. For vehicles such as the Chevrolet Express 2500 and GMC Savana 2500, as well as heavy-duty front brake applications on Chevrolet C2500 and GMC C2500 models, this rotor is built around the correct metallurgy, dimensions, and mounting pattern for the listed fitments.

The part number 320.66027F is part of Centric’s GCX application-specific rotor family, which uses coating patterns matched to brake pad friction type and vehicle OEM metallurgy profiles. That approach helps maintain proper braking feel and rotor compatibility across the supported Chevrolet and GMC truck and van platforms.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What This Rotor Helps Address

• Front brake pulsation caused by worn or out-of-spec rotors
• Rust buildup on exposed rotor surfaces
• Uneven pad contact from surface wear
• Brake noise related to rotor condition
• Fitment issues on 8-lug front brake applications with the listed Chevrolet and GMC platforms

Installation Notes and Tips

Verify rotor dimensions, hub bore, bolt circle, and ABS tone ring requirements before installation. This rotor is a vented, front-position part with an 8-lug pattern and hub-and-rotor mounting style, so it should be matched to the exact vehicle configuration listed in the fitment data. Clean all mating surfaces before assembly and inspect pads, calipers, and bearings during service.

Fits 1996-2002 Chevrolet Express 2500, front; 1996-2002 GMC Savana 2500, front; 1996-2001 Chevrolet Express 3500, front; 1996-2001 GMC Savana 3500, front; 1995-2000 Chevrolet C2500, front; 1995-2000 Chevrolet C3500, front; 1999-2000 GMC C2500, front; 1995-2000 GMC C3500, front; 1994-1999 Chevrolet C1500 Suburban, front; 1992-1999 Chevrolet C2500 Suburban, front; 1994-1999 GMC C1500 Suburban, front; 1992-1999 GMC C2500 Suburban, front; 1996-1998 GMC C2500, front; 1996 Chevrolet G30, front; 1996 GMC G3500, front.

Quality Assurance

Centric designs the GCX rotor line to align with OE performance targets and vehicle-specific metallurgy requirements. The fully coated finish and application-specific construction support long-term durability on the supported Chevrolet and GMC front brake applications.